The DMM100-BAT from ATI Audio is a level, impedance and connector matcher for digital audio signals. AES/EBU and S/PDIF digital signals share the same general data format. However, an S/PDIF signal will include dedicated bits in the data stream that will indicate whether the signal source is an original or a first generation copy. A professional device may indicate whether the encoded audio is a stereo signal or two monaural channels.
The DMM100-BAT does not discriminate based on these details and simply attempts to output a clean copy of the original data stream.
For example, a situation might arise where it is necessary to run a low level RCA type (S/PDIF) digital output a long distance, in a high noise environment. In this instance, a balanced XLR high-level connection would be a better choice, while maintaining the integrity of the original data.
The unit provides four types of input and output connectors for both the AES/EBU and S/PDIF digital formats. These include XLR, RCA coaxial, BNC and TOSLink optical.
The DMM100-BAT can operate using either four AA batteries or an external 24VDC power module. Fresh alkaline batteries will provide a minimum of forty-hours of operation. The batteries are cut off by the introduction of external power and can be used as an automatically-switched backup power source.